health.
that is what it will come down to this season for the spurs.
if they can stay healthy, they will win the title.
theres no team in the league that can beat a healthy spurs team in a 7 game series.
they are too well coached and too all-around to lose 4 games out of 7... not to mention they have fantastic home court advantage.

As a Spurs fan I believe that Boston can have there way with Spurs no problem. If SA can get there defense level up to past levels then I'd say they are untouchable but thats not the case as of right now.